Search Results: 'National Grid'

Pumping Below
24 June, 2015
Rising interest in pumped storage hydropower in the US could see more large underground excavations in coming decades. Report by Patrick Reynolds.

On the radar
24 June, 2015
Ground penetrating radar was used to investigate pavement settling in the Cumberland Gap mountain tunnel. Roger Roberts, senior software engineer for Geophysical Survey Systems, Inc, working with engineers at the Kentucky Transportation Center at the University of Kentucky, explains the research.

Are we there yet?
29 January, 2015
Moving materials to a jobsite in the centre of a major city or hauling TBM components up steep mountainous routes has its challenges, which can affect a project’s cost and timescale. Rhian Owen investigates the increasing importance of an effective logistics system from the beginning.

Tunnel drive under Thames complete
22 August, 2014
GREAT BRITAIN - TBM Evelyn has completed a 3.4km drive under the River Thames from Wandsworth in south London to Earls Court.

Delhi's Belly
26 February, 2014
Supplying eight of the 25 TBMs required for Delhi Metro's Phase III, manufacturer Terratec is heavily invested in the project. In a series of vignettes, Tunnels checks out how the different worksites are being handled in a city crowded beyond capacity.

New tender announced for Fehmarnbelt tunnel
07 January, 2014
Copenhagen-based client, Femern, which is in charge of the preparation, investigations and planning of the Fehmarnbelt tunnel, has announced another major tender. The work concerns a large sub-station on Lolland. It will provide power for the electric trains, which will operate through the tunnel and for the electrical systems in the tunnel.

Cable guy
10 October, 2013
A new cable tunnel has gone seemingly without a hitch in the Willesden/harlesden neighbourhoods of North London. Alex Conacher tours the site with Murphy’s tunnelling project manager Keith Pollard.

Private bank to finance 15 per cent of Broadlands Hydro-Power Project
30 July, 2013
Continuing its pivotal role in funding Sri Lanka's vital infrastructure development, Hatton National Bank (HNB) recently tied up with the Ceylon Electricity Board (CEB) to partly finance the ambitious Broadlands Hydro-Power Project, which will add 35MW to the national grid.

Northern Light
19 July, 2013
Progress on underground disposal of nuclear waste is limited internationally, but Finland and Sweden are striding ahead, reports Patrick Reynolds.

Tunnel Environment
13 March, 2013
Environmental monitoring is getting an increased focus from tunnel clients, designers and contractors. Alex Conacher speaks to a variety of the parties to find out some of the main concerns, and what developments are being made in thinking and technology.

Segment Moulds specified
06 March, 2013
In this technical review, engineers on the Sparvo tunnel project take us through the complete process of segment design and casting on-site to handling and finally installation. Alex Conacher speaks to Alain Préaut, sales director for segment mould and system manufacturer CBE to get the other side of the coin

Worker injured in London tunnel
30 January, 2013
A construction worker has suffered head and shoulder injuries at a National Grid site in north London yesterday morning, local news reports revealed today. The 24-year-old man was taken to hospital from the site near Haringey where National Grid are tunnelling as part of the London Power Tunnels project.

Power cables TBM breaks through at Willesden in London
23 January, 2013
J Murphy & Sons has completed breaking through on the Willesden to Taylors Lane Deep Cable Tunnel Project in north London for UK Power Networks, it was announced last week. The 2.59km tunnel where the 56t TBM arrived will house four new 132,000-volt cable circuits, linking between two substations upgrading electrical supplies in the area.

Power up the future
17 May, 2012
UK gas and electric power network operator National Grid is engaged in a major renewal programme to ensure power supplies for the future. One aspect is to install high-voltage cables underground to renew the grid in major urban areas, starting with London. Maurice Jones visited one of the current tunnel drives in a 32km-long network that started recently in north London

TBM moves for London Power
25 April, 2012

Present and future state of UK tunneling
16 April, 2012
Outgoing chair of the BTS Bob Ibell looks at the recent achievements of the UK tunnelling industry and the current state of works

Raising the pressure
10 November, 2011
Adding an extra turbine to the Vianden pump storage plant in Luxembourg requires a new vertical pressure shaft. Benjamin Kunstle and Alexander Frey of Herrenknecht explain how the raiseboring is sinking in

TUCA opens its doors to the industry
02 November, 2011

Where the work is
18 October, 2011
As T&TI goes to press the general and business media are awash with stories of economic gloom and dire predictions, and yet the tunnelling industry in Western Europe seems relatively buoyant. Can this comparatively happy state continue? Maurice Jones checks on the major current and planned projects and the prospects for some big players headquartered in Western Europe

Prepared for the long haul
18 October, 2011
Since precast concrete segmental tunnel lining was invented, there has never been so much development of the ‘product’ as in recent years, even though, superficially, it may look the same. Maurice Jones looks at some of these developments aimed at increasing tunnelling progress whilst avoiding mishaps